body {
    margin: 0 auto;
    width: 520px;
}

a {
    text-decoration: none;
    color: dimgray;
    font-size: 14px;
}

li {
    list-style: none;
}

.top1 {
    height: 35px;
    margin: 0;
    padding: 0;
    width: 520px;
    position: relative;
    background-color: rgb(61, 61, 131);
}

.top1 a {
    display: inline-block;
    margin-top: 4px;
}

.top1-right {
    float: right;
    position: relative;
    margin-right: 10px;
}

.top1-right input {
    display: block;
    float: left;
    height: 20px;
    margin-top: 6px;
    padding: 0;
    border: 0;
}

.top1-right button {
    height: 20px;
    border: 0;
    padding: 0;
    margin: 0;
}

.top2 {
    margin: 0;
    padding: 0;
    width: 520px;
    position: relative;
    background-color: rgb rgb(99, 99, 100);
}

.top2 ul {
    width: 520px;
    margin: auto;
    padding: 0;
    position: relative;
}

.top2>ul>li {
    border: 1px solid rgb(99, 99, 100);
    height: 30px;
    border-left: 0;
    width: 128px;
    position: relative;
    float: left;
}

.top2 ul li a {
    font-size: 16px;
    line-height: 40px;
    display: block;
    text-align: center;
}

.zhuti {
    display: none;
    width: 520px;
    position: relative;
    right: 260px;
    background-color: white;
    z-index: 1;
}

.zhuti ul {
    width: 520px;
    position: relative;
}

.zhuti ul li {
    margin-top: 10px;
    width: 162px;
    display: block;
    height: 40px;
    float: left;
    margin-left: 5px;
    margin-right: 5px;
    position: relative;
    background-color: rgb(99, 99, 100);
}

.zhuti ul li a {
    height: 40px;
    display: block;
    text-align: center;
    line-height: 40px;
    color: aliceblue;
    font-size: 15px;
}

.zhuti-li:hover {
    background-color: black;
}

.zhuti-li:hover .zhuti-a {
    display: none;
}

.zhuti-a:hover .zhuti-a1 {
    display: block;
    color: aliceblue;
}

.zhuti-li:hover .zhuti {
    display: block;
}

.zhuti-a1 {
    display: none;
    text-align: left;
    line-height: 20px;
    color: aliceblue;
    font-size: 15px;
}

.zhuti-li .zhuti-a span {
    margin-left: 30px;
    display: inline-block;
    width: 10px;
    height: 10px;
    border-right: #000 solid 1px;
    border-bottom: #000 solid 1px;
    transform: translateY(-50%) rotate(45deg);
}

.set1 {
    width: 520px;
    margin: 0;
    padding: 0;
    position: relative;
    float: left;
}

.set1-up {
    margin: 0 auto;
    width: 500px;
    height: 50px;
    position: relative;
}

.set1-up p {
    float: left;
    width: 40px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    background-color: green;
    color: wheat;
    font-size: 12px;
}

.set1-up a {
    margin-left: 20px;
    margin-top: 10px;
    width: 400px;
    position: relative;
    display: block;
    font-size: 13px;
    float: left;
    height: 40px;
    line-height: 40px;
}

.set1-down {
    width: 520px;
    margin: auto;
}

.set1-down img {
    width: 500px;
    height: 300px;
}

.set2 {
    width: 520px;
    padding: 0;
    position: relative;
}

.set2-1 {
    width: 520px;
    height: 61px;
    float: left;
    overflow: hidden;
}

.nav {
    position: sticky;
    top: 0;
    width: 800px;
    height: 76px;
    overflow-x: auto;
    overflow-y: hidden;
}

.navbar {
    margin: 0;
    padding: 0;
    width: 800px;
    height: 76px;
    position: relative;
}

.navbar li {
    position: relative;
    width: 120px;
    float: left;
    margin: 0;
    padding: 0;
    border: 1px solid rgb(99, 99, 100);
    border-left: 0;
    border-bottom: 3px solid blue;
}

.navbar li a {
    display: block;
    margin: 0;
    padding: 0;
    width: 120x;
    text-align: center;
    line-height: 50px;
}

.nali1 {
    background-color: blue;
}

.set2 .set2-1 .nav .navbar .nali2:hover {
    background-color: blueviolet;
    border-bottom: 3px solid blueviolet;
    color: white;
}

.navbar>.nali2:hover~li {
    border-bottom: 3px solid blueviolet;
}

#set-con {
    z-index: -1;
    width: 520px;
    position: relative;
    float: left;
    padding: 0;
    margin: 0;
}

#set-con ul {
    margin-top: 60px;
    position: relative;
    padding: 0;
}

#set-con ul li {
    width: 520px;
    float: left;
    padding: 0;
    margin: 0;
    margin-right: 20px;
    position: relative;
}

#set-con ul li a img {
    float: left;
    position: relative;
}

#set-con1 {
    z-index: -1;
    width: 520px;
    position: relative;
    margin: 0;
    padding: 0;
    float: left;
}

#set-con1 ul {
    margin-top: 60px;
    position: relative;
    padding: 0;
}

#set-con1 ul li {
    width: 520px;
    float: left;
    position: relative;
}

#set-con1 ul li a img {
    float: left;
    position: relative;
}